Changes between Version 5 and Version 6 of EwEugForagingTimeAndPredationRisk

Timestamp:

2010-01-28 16:18:57 (15 years ago)

Author:

varunr

Comment:

--

EwEugForagingTimeAndPredationRisk

@@ -9 +9 @@
 In Ecosim a simple functional form for ''T''''it'' is implemented that will result in near constant feeding rates, but changing time at risk to predation, in situations where rate of effective search ''a'',,''ji'',, is the main factor limiting food consumption rather than prey behaviour as measured by ''v'',,''ji'',,. This is implemented in form of the relationship:
 
-../Resources/Images/0800002A.png''' Eq. 65'''
+[[Image(wiki:EwEugImages:0800002A.png)]] ''' Eq. 65'''
 
 where, a is a user-defined Feeding time adjustment rate [0, 1] on the Ecosim [[Group info.htm#_Read_time_series|Group info]] form; ''c,,i,opt,,'' is the (internally computed) feeding rate that optimizes feeding rate versus mortality risk for ''i''; ''c,,i,t-1,,'' is the consumption/biomass ratio in the previous time step for the group. The time spent feeding is constrained by a user-defined value (Maximum relative feeding time on the ''Group info'' form with default of two times the feeding rate in the Ecopath base model).
@@ -15 +15 @@
 The relationship between foraging time, consumption and predator biomass is illustrated in Figure 3.4.
 
-../Resources/Images/0600002B.png
+[[Image(wiki:EwEugImages:0600002B.png)]]
 
 '''Figure 3.4''' Relationship between relative foraging time (''T''), ''Q/B'' and predator biomass. If ''Q/B'' is held constant the foraging time (and hence predation risk) is a linear function of the predator biomass (solid line). If ''T'' is held constant the ''Q/B'' will decrease asymptotically with predator biomass (stippled line).